Epithelial

External or internal covering/lining of the body and organs.

Epithelial Tissue

Tissues that provide general structure, mechanical strength, has abundant amount of ECM

Connective Tissue

Contraction/movement

Muscular Tissue

Interpretation of stimulus.

Nervous Tissue

Provides structural support for the epithelium and serves as a selective barrier for the movement of materials to and from the supporting tissue.

Basement Membrane

Epidermis of skin

Ectoderm

Lining epithelium of kidneys

Mesoderm

Lining epithelium of gastrointestinal tracts.

Endoderm

Single layer of flat cells

Simple squamous

Single layer of cuboidal cells

Simple cuboidal

Single layer of tall, columnar cells.

Simple columnar

Lined by several layers of cells

Stratified Epithelium

•Maturation from cuboidal basal layer to flattened surface layer.

Stratified squamous

Excretory ducts of salivary sweat glands

Stratified cuboidal

Conjunctiva lining the eyelids

Stratified columnar

Contains cells that are flattened and cells that are cuboidal

Transitional Epithelium

Modification of simple epithelium (with cilia)

Pseudostratified Epithelium

Tightly packed, microscopic projection of the apical surface of intestinal absorptive cells.

MICROVILLI

Actively motile processes that proper substances along their surfaces.

CILIA

Long microvilli in the epididymis and vas deferens of the male reproductive tract.

STEREOCILIA

• Produces thick mucus secretion • Synthesize and secrete mucus.

GOBLET CELLS

incomplete development of tissue

Hypoplasia

presence of new abnormal tissue growth

Neoplasia

transformation of one tissue to another.

Metaplasia

increase the number of cells.

Hyperplasia

✓ a malignant neoplasm ✓ an abnormal or uncontrolled growth made up of epithelial cells

Carcinoma

Partial destruction of cells.

Apocrine gland

Total destruction of the gland of the secretory unit themselves

Holocrine glands

Not destruction

Merocrine gland

Contain both serous and mucous type

Mixed gland

Secretes living cells

Cytogenic gland

A benign epithelial growth with grandular morphology.

Adenoma

Malignant growth.

Adenocarcinoma

Occluding junction or zonula Occludens.

TIGHT JUNCTION

Zonula Adherens

ADHERING JUNCTION

link adjacent cells to cell adhesion

Desmosomes

link epithelial cells to BM.

Hemidesmosome-

• Communication junctions • Allows passage of molecules

GAP JUNCTION